NOVASTAR® PCE Liquid Series
NOVASTAR® PCE Liquid WRL 501 WRL 501 High Water-Reducing PCE - Formulation Solutions
A liquid polycarboxylate ether product developed for use as the primary water-reducing component in high-performance concrete admixture formulations.
NOVASTAR® WRL 501 is designed to support strong initial cement dispersion, reduced concrete water demand and high initial fluidity. It can be evaluated for ready-mix, precast, pumped and high-strength concrete admixture systems.
- ISO 9001 Certified Manufacturing
- Export to 60+ Countries
- Free Sample Available
- OEM & Private Label Supported
What is NOVASTAR® WRL 501?
The performance of a high-range water-reducing admixture depends on the PCE structure, cement composition, mineral additions, aggregate quality, temperature and the complete formulation. WRL 501 may be evaluated when stronger initial dispersion or a more effective water-reducing base is required.
NOVASTAR® WRL 501 is a liquid polycarboxylate ether product intended for the formulation of high-range water-reducing concrete admixtures.
Its primary role is to support the dispersion of cement particles and help reduce the amount of mixing water required to achieve the target concrete consistency.
WRL 501 can be evaluated as a standalone primary water-reducing component or as part of a functional PCE system containing slump-retention, early-strength, workability-enhancing, clay-resistant or viscosity-reducing grades.
Why Formulators Choose NOVASTAR® WRL 501?
- Strong Initial Dispersion - Designed to support rapid dispersion of cement particles during the initial mixing stage.
- Reduced Water Demand - Helps formulators develop concrete admixtures intended to reduce mixing-water demand under suitable mix-design conditions.
- High Initial Fluidity - Supports the development of concrete with the initial slump or slump flow required for placement and pumping.
- Flexible Blending Platform - Can be evaluated with other functional PCE grades to balance water reduction, slump retention, workability and material compatibility.
- Supports Low Water-Binder Ratios - Suitable for laboratory evaluation in concrete systems requiring lower water-binder ratios and higher performance targets.
- Formulation Adjustment Support - LANDU can review customer-provided cement, aggregate and admixture data to recommend a starting evaluation direction.
Technical Specifications
| Property | Value |
|---|---|
| Appearance | White to pale-yellow free-flowing powder |
| Main component | High-performance polycarboxylate copolymer (PCE) |
| Solid content | 95% – 98% |
| pH (10% aqueous solution) | 6 – 9 |
| Water reduction rate | ≥ 37% |
| Dispersion mechanism | Electrostatic repulsion + steric hindrance |
| Compatible systems | Cement and gypsum-based systems |
| Packaging | 25 kg paper bag with inner PE liner |
| Shelf life | 12 months in sealed dry storage |
Recommended Applications
WRL 501 can be evaluated as a primary water-reducing component across different concrete applications. The final formulation should be adjusted according to local materials, production conditions and target concrete performance.
- Ready-Mix Concrete - Provides a water-reducing base for commercial concrete admixture formulations requiring good initial workability.
Common combinations: WRL 501 + slump-retention PCE
- Pumped Concrete - Supports reduced water demand and initial flow in concrete designed for horizontal or vertical pumping.
Common combinations: WRL 501 + workability-enhancing or viscosity-control grade
- Precast Concrete: - Can be evaluated in precast admixture formulations requiring high initial fluidity and dense concrete placement.
Common combinations: WRL 501 + early-strength PCE
- High-Strength Concrete - Suitable for evaluation in low water-binder-ratio concrete systems with high strength and flow requirements.
Common combinations: WRL 501 + viscosity-reducing PCE
- Self-Compacting Concrete - Provides initial dispersion for formulations that must balance filling ability, passing ability and segregation resistance.
Common combinations: WRL 501 + workability-enhancing PCE
- Manufactured-Sand Concrete - Can serve as the primary water-reducing component where manufactured sand is used.
Common combinations: WRL 501 + clay-resistant or workability-enhancing PCE
Need a Customized PCE Blend?
Share your cement type, aggregate conditions, target slump, required retention time and current admixture formulation. LANDU will recommend a suitable PCE combination and a laboratory starting ratio for evaluation.
Functional PCE Blending Guide
| Formulation Objective | Recommended PCE Combination | Functional Role |
|---|---|---|
| High-Range Water-Reducing Admixture | WRL 501 | Provides the primary dispersing and water-reducing performance for high-flow and low water-binder-ratio concrete. |
| Extended Slump-Retention Admixture | WRL 501 + Slump-Retention PCE | Combines high initial water reduction with extended workability for hot-weather concreting and long-distance delivery. |
| Early-Strength Precast Admixture | WRL 501 + Early-Strength PCE | Balances concrete fluidity with accelerated early-strength development and shorter demoulding cycles. |
| Clay-Tolerant Admixture for Manufactured Sand | WRL 501 + Clay-Resistant PCE | Improves tolerance to clay minerals, excessive fines and fluctuations in manufactured-sand quality. |
| Workability-Enhancing Admixture | WRL 501 + Workability-Enhancing PCE | Improves cohesion, lubrication and aggregate encapsulation while helping reduce bleeding, segregation and pumping instability. |
| Low-Viscosity Admixture for UHPC | WRL 501 + Viscosity-Reducing PCE | Maintains strong water reduction while reducing excessive plastic viscosity and flow resistance in high-powder concrete systems. |
Safety, Handling and Transport
- Safety Classification: According to the current SDS, WRL 501 is not classified as a hazardous substance or mixture under the OSHA Hazard Communication Standard.
- Ingredients: The current SDS does not identify hazardous ingredients in the product.
- Storage: Keep the container tightly closed in a dry and well-ventilated place. Store in accordance with applicable local requirements.
- Transport: The current SDS states that WRL 501 is not regulated as dangerous goods under IATA-DGR, IMDG Code or U.S. 49 CFR.
- Handling: Follow standard chemical-handling and workplace-hygiene practices. Appropriate ventilation and personal protective equipment should be selected according to the workplace risk assessment.
Frequently Asked Questions - FAQs
It can be evaluated as the primary water-reducing component. Where clay content, excessive fines or sand-quality variation affects performance, a clay-resistant or workability-enhancing grade may also be required.
The appropriate dosage depends on product solid content, cement chemistry, water-binder ratio, aggregate quality, temperature and target concrete performance. The current TDS and laboratory testing should be used to determine the starting dosage.
Customers may submit their current formulation, cement information, aggregate conditions and concrete test results for product-selection and laboratory evaluation support.
According to the current SDS, WRL 501 is not regulated as dangerous goods under IATA-DGR, IMDG Code or U.S. 49 CFR. Destination-specific requirements should still be confirmed before shipment.
Submit your company, application, destination, expected quantity and available concrete-material information. More complete technical information helps LANDU recommend a more suitable sample and evaluation direction.
